<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
        <span v-if="item.redirect==='noRedirect'||index==levelList.length-1" class="no-redirect">{{ item.meta.title }}</span>
        <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>

<script>
import pathToRegexp from 'path-to-regexp';

export default {
  data() {
    return {
      levelList: null
    };
  },
  watch: {
    $route() {
      this.getBreadcrumb();
    }
  },
  created() {
    this.getBreadcrumb();
  },
  methods: {
    getBreadcrumb() {
      // only show routes with meta.title //meta.cache
      const matched = this.$route.meta.cache.filter(item => item.meta && item.meta.title);
      // const first = matched[0];
      // if (!this.isDashboard(first)) {
      //   matched = [{ path: '/dashboard', meta: { title: '系统首页' }}].concat(matched);
      // }
      let title = matched.reduce((pre, cur) => {
        pre.push(cur.meta.title);
        return pre;
      }, []);
      if (title.includes('商品业绩') || title.includes('自有品牌业绩')) {
        title = ['报表管理', '商品业绩', '业态大区城市门店版'];
      }
      if (title.includes('库存分析')) {
        title = ['报表管理', '库存分析', '大区城市门店版'];
      }
      if (title.includes('汰换报表') && title.includes('总部报表')) {
        title = ['报表管理', '汰换报表', '查看报表'];
      }
      if (title.includes('汰换报表') && title.includes('汰换详情-城市版')) {
        title = ['报表管理', '汰换报表', '汰换清单-大区版'];
      }
      if (title.includes('零销售报表') && title.includes('商品版') || (title.includes('零销售报表') && title.includes('门店版'))) {
        title = ['报表管理', '零销售报表', '城市版'];
      }
      this.$store.commit('diclist/SET_BREADTITLE', title);
      const list = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false);
      // console.log(list);
      this.levelList = list;
    },
    isDashboard(route) {
      const name = route && route.name;
      if (!name) {
        return false;
      }
      return name.trim().toLocaleLowerCase() === '系统首页'.toLocaleLowerCase();
    },
    pathCompile(path) {
      // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
      const { params } = this.$route;
      var toPath = pathToRegexp.compile(path);
      return toPath(params);
    },
    handleLink(item) {
      // console.log(item);
      const { redirect, path } = item;
      if (redirect) {
        this.$router.push(redirect);
        return;
      }
      this.$router.push(this.pathCompile(path));
    }
  }
};
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  line-height: 50px;
  margin-left: 8px;
  font-weight: 400;

  .no-redirect {
    color: #5D80F7;
    font-weight: 400;
    cursor: pointer;
  }
}
</style>
